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Home >> Toyota Truck >> 1997 >> Previa Van LE 2WD L4-2438cc 2.4L DOHC SC MFI >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Manual A/C System >> Unstable System Operation

Unstable System Operation

1. Defective power servo motor.
2. Defective system amplifier.
3. Defective A/C amplifier.
4. Defective wiring or ground connection.

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